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1、InfraredRemoteControlSystemAbstractRedoutsidedatacorrespondencethetechniquebecurrentlywithinthescopeofworlddriveextensiveusageofakindofwirelessconjunctiontechnique,drivenumeroushardwareandsoftwareplatformsupport.Redoutsidethetransceiverproducthavecostlow,smallscal
2、edturn,thebaudratebequick,pointtopointSSL,notbytheelectromagneticinterferenceetc.characteristics,canrealizationinformationatdissimilarityoftheproductfast,convenience,safelyexchangeandtransmission,atshortdistancewirelessdeliveraspecttoownveryobviousofadvantage.Alon
3、gwithredoutsidethedatadeliveratechniquemoreandmoremature,thecostdescend,redoutsidethetransceivernecessarilywillgetattheshortdistancecommunicationrealmmoreextensiveofapplication.Thepurposethatdesignthissystemistransmitcustomer’soperationinformationwithinfraredraysf
4、ortransmitmedia,thendemodulateoriginalsignalwithreceivecircuit.Itusecodingchiptomodulatesignalandusedecodingchiptodemodulatesignal.ThecodingchipisPT2262anddecodingchipisPT2272.BothchipsaremadeinTaiwan.MainworkprincipleisthatweprovidetoinputtheinformationforthePT22
5、62withcodingkeyboard.TheinputinformationwascodedbyPT2262andloadingtohighfrequentloadwavewhosefrequentis38kHz,thenmodulateinfraredtransmitdioxideandradiatespaceoutsidewhenitattainenoughpower.Thereceivecircuitreceivethesignalanddemodulateoriginalinformation.Theorigi
6、nalsignalwasdecodedbyPT2272,soastodrivesomecircuittoaccomplishcustomer’soperationdemand.Keywords:Infrared；Code；Decoding；LM386；Redout-sidetransceiver1Introduction1.1researchthebackgroundandsignificanceInfraredDataCommunicationTechnologyistheworldwideuseofawirelessc
7、onnectiontechnology,bythemanyhardwareandsoftwareplatformssupported.Isadatathroughelectricalpulsesandinfraredopticalpulseswitchbetweenthewirelessdatatransceivertechnology.Infraredtransceiverproductswithlowcost,small,fasttransmissionrate,thepoint-to-pointtransmissio
8、nsecurity,notsubjecttoelectromagneticinterferenceandothercharacteristicsthatcanbeachievedbetweenthedifferentproducts,rapid,convenientandsafeexchangeandt
